Stone and ore crusher



(No Mod-e1.)

S. L. MARSDEN.

STONE OR ORE GRUSHER.

No. 264,179. Patented SeptIlZ, 1882.

0 0 T we 3 hwy V vanes. Fhomhthognpher. minum n C UNITED STATES PATENT OFrrcE.

SAMUEL L. MARSDEN, OF new HAVEN, CONNECTICUT.

S TONE AND ORE CRUSHER.

SPECIFICATION forming part of Letters Patent No. 264,179, dated September 12, 1882. Application filed April 7, 1882. (N 0 model.)

To all whom it may concern:

Be it known that I, SAMUEL L. MARSDEN, a citizen of the United States, and aresident of New Haven, county of New Haven, State of Uonnecticut, have invented a new and useful Improvement in Stone and Ore Crushers, of which the following is a specification.

This invention relates to that class of crushers styled jaw-crushers; and its object is to construct a more inexpensive, durable, and effective machine. The invention consists in the combination of an upright cylindrical jaw with an opposite concave jaw-plate between which the stone is broken; and, further, of adjustable and renewable lever and toggle hearings or fulcrums, all of which will be hereinafter described.

Figure l is a sectional side elevation of my improved crusher. Fig. 2 is a plan of the same. Fig. 3 is a plan of a section of a cylindrical sectional jaw with smooth crushing-surface. Fig. 4 is a plan of a section of a cylindrical sectional jaw with corrugated crushingsurface. Fig. 5 is an enlarged rear elevation of an improved adjustable toggle-block carrying an adjustable lever-fulcrum. Fig. 6 is a side elevation of the same.

Similar letters of reference indicate corresponding parts.

In the drawings, A represents the frame of the machine, B B the fly-wheels, G the driving-pulley, D the crank-shaft, E the pitman, F the wedge for adjusting the toggle-block, G the toggle, H the movable or swingingjaw, I the fixed jaw, and K the cheeks, all of which parts are well known and understood, and hence require no further description here.

Instead of the fiat fixed jaw-plate in common use in stone and ore crushers of this class, I use a cylindrioaljaw, as shown at L, which is preferably constructed in sections, L, as in-' dicated in the drawings, but may consist of a single casting, and may have a smooth crushing-surface, as shown in Fig.3, or a corrugated crushing-surface, as shown in Fig. 4; or the surface may be furnished with projecting teeth or studs, if so desired. This cylindrical jaw Lhas the advantage of presentingabroader wearing-surface than a fiat plate in a frame of given width, and said jaw L may, when one face is worn, be turned partly or wholly around to present a fresh or unworn face toward the opposite jaw, and the relative positions of the sections L may be changed at will, so that all may be made to sustain an equal amount of wear. Hence it maybe seen that this cylindrical jaw L will endure two or three times more wear than will the ordinary flat jaw-plate, whichlatter also requires to be carefully planed and packed, so that it may fit properly upon its seat, while no labor or expense of this character is requisite for the adjustment of the cylindrical jaw. Thus the ad vantages of the improved cylindrical jaw over the common flat jaw-plate are clearly inanifest. Preferably the plate-sections L are cast with a central bore, a, and a surrounding ring of holes, I). In each bore a is fixed a crossbar, 0, by which the sections L may be raised or lowered in place, and in the holes Z) pins 61 may be inserted for holding the sections L joined and fixed together in position, as shown in Fig. 1. This cylindrical jaw L, when in position, rests on lugs f, that project inward from the sides of the frame A, and is held down in place by a key, M, that, lying across the top of the upper section, L ,is passed th rough the slots 9 of the hopper-frame plates M, and through the lugs k, that are formed on said plates M, especially for the reception of said key M.

Theiin proved swinging or movablejaw-plate N has a corrugated concave face whose curve corresponds with that of the jaw L, being in its general outline equidistant therefrom at every point throughout its width. Hence it will be seen that a wider crushing-surface is afiorded by these curved jaws than there would be by straight or flat jaws of the same breadth; and these curved or convex and concavejaws not only present a more extended crushingsurface, but they are also especially adaptedbecause oftheir curves-to the crushing ofslabs or plates of stone or other substance, which are apt to pass unbroken or but partially reduced out from between the flat jaws of ordinary crushiug-machines. The jaw-plate N is adapted to be fixed in place with either end uppermost, and it may have its face beveled off at either or both ends if it be desired to enlarge the opening between thejaws at the curing in place the hopper.

top or bottom thereof. This plate N is held I in place partly by the studs 70, that project from the swinging jaw H and enter the inclined plate-sockets l, and partly by the screw-bolt m.

On the outer faces of the hopper-frame plates M are lugs n that form jaws or sockets for se- (Not shown.)

0 represents the toggle-lever, whose long horizontal arm is connected to the crank-shaft D by the pitman E. This lever 0 is in its general features similar to that shown in my Patent No. 280,304, July 20, 1880; but I have found it desirable to substitute for the ear in that lever a renewable and adjustable concave bearing, 0, which is set in a corresponding socket, 0, made in the back of the head of the lever O, and is made adjustable therein by means of one or more set-screws, 0".

The toggle-block P is in this machine also made vertically adjustable by means of an attached screw,'p, that passes up through the frame A, and has a nut, 12, on its upper end. This toggle-block P has also a socket, q, in its face, in which is adjustably held by a setscrew, q, a fulcrum or bearing, 1 which projects into the concavity of the lever-bearing 0. In the face also of the lever O is a socket, 1", in which is adjustably held by a set-screw, 1", a toggle bearing or fulcrum, 1 and in the back of the swingingjaw H a toggle bearing or fulcrum, s, is adjustably held by a set-screw, s, in a socket, 8 Hence it will be seen that all of the lever and togglefulcrums or bearings may be adjusted, removed, replaced, and renewed whenever desired or when the parts hecome worn, whereby the renewal of more expensive parts of the machine may be avoided, and whereby a more accurate adjustment of the parts may be had on the line of the greatest strain or pressure.

The combined rod Q, spring t, and nuts t serve to retract the jaw H after each forward motion.

I do not broadly claim adjustable or renewible fulcrums or hearings in a stone-breaker;

Having thus described my invention, I claim as new and desire to secure by Letters Patent 1. In a stone and ore crusher, the combination of an upright cylindrical fixed jaw and an opposite concave swingingjaw-plate, substantially as herein shown and described.

2. In a stone and ore crusher, a fixed cylindrical jaw constructed in sections, and provided with suitable devices whereby they may be placed in or lifted from position, and devices whereby they may be united to each other, substantially as herein shown and described.

3. In a stone and ore crusher, as a means for holding the fixedjaw down in place, the combination of the transverse key M, slotted plates M, and lugs 71, substantially as set forth.

4. A stone and ore crusher constructed substantially as herein shown and described, containing the following elements in combination: a cylindriealjaw, an opposite concavejaW-plate, a toggle-lever with socketed head, an adjustable socketed toggle-block, an adjustable lever, and toggle fulcrums or bearings, all arranged substantially as herein shown and described.

5. In a stone and ore crusher, the combina tion, with the toggle-lever 0, having rear headsocket, 0, of the adjustable bearing 0, substantially as and for the purpose described.

6. In a stone and ore crusher, the combination, with the toggle lever (),havingface-socket i", toggle G, and swingingjaw H, having rear socket, 8 ot' the adjustable toggle-bearings r s, substantially as and for the purpose described.

7. In a stone and ore crusher, the combina tion, with the toggle-lever 0, having a rear head-socket, 0, and provided with adjustable bearing 0, of the toggle-block 1?, having facesocket q and adjustable lever-fulcrum 1 substantially as herein shown and described.

In testimony that I claim the foregoing as my invention I have signed my name, in presence of two witnesses, this 3d day of April, 1882.

S. L. MARSDEN.

Witnesses:

W. J. MILLs, S; ARTHUR MARsnEN. 

